Migrate most of wasmtime from lazy_static to once_cell (#4368)

* Update tracing-core to a version which doesn't depend on lazy-static.

* Update crossbeam-utils to a version that doesn't depend on lazy-static.

* Update crossbeam-epoch to a version that doesn't depend on lazy-static.

* Update clap to a version that doesn't depend on lazy-static.

* Convert Wasmtime's own use of lazy_static to once_cell.

* Make `GDB_REGISTRATION`'s comment a doc comment.

* Fix compilation on Windows.

crates/cache/Cargo.toml

@@ -31,7 +31,7 @@ rustix = { version = "0.35.6", features = ["process"] }
 
 [dev-dependencies]
 filetime = "0.2.7"
-lazy_static = "1.3.0"
+once_cell = "1.12.0"
 more-asserts = "0.2.1"
 pretty_env_logger = "0.4.0"
 tempfile = "3"

crates/cache/src/worker/tests/system_time_stub.rs

@@ -1,9 +1,7 @@
-use lazy_static::lazy_static;
+use once_cell::sync::Lazy;
 use std::time::{Duration, SystemTime, SystemTimeError};
 
-lazy_static! {
-    pub static ref NOW: SystemTime = SystemTime::now(); // no need for RefCell and set_now() for now
-}
+pub static NOW: Lazy<SystemTime> = Lazy::new(SystemTime::now);
 
 #[derive(PartialOrd, PartialEq, Ord, Eq)]
 pub struct SystemTimeStub(SystemTime);